fix: pnpm version (#20)

Author: devinxl

package.json

@@ -2,7 +2,7 @@
   "name": "greenfield-toolkit",
   "version": "0.0.1",
   "author": "node-real",
-  "packageManager": "pnpm@8.9.2",
+  "packageManager": "pnpm@7.33.6",
   "description": "Greenfield Toolkit offers easy-to-use tools for developers to effortlessly start building on BNB Greenfield.",
   "license": "MIT",
   "scripts": {